Wood-shaping machine



Sept 21 {1926. 1,500,261 w'. M. WHITNEY WOOD SHAPING MACHINE Filed Oct. 26, 1925 4 Sheets-Sh9t l A TTORNEY Sept. 21 1926. 1,600,261

- w. M. WHITNEY WOOD SHAPING: MACHINE Filed Oct, 26, 1925 4-Sheets-Sheet 2 XTTORNEY 1,600,261 W. M. WHlTNEY woo!) SHAPING MACHINE Filed Oct. 26. 1925 4 Sheets-Sheet 3 ago ,4 TTOFPNE 9e Sept; 21 1926.

W. M. wHkTNEY WOOD SHAPING MACHINE 4 Sheets-Sheet 4 Filed Oct. 26, 1925 //v 1/5A/ TOR Llll 4 ATTORNEY WILLIAI I. WHITNEY, OI WINCHENDON, MASSACHUSETTS.

' woon-snarmo nacnmn.

. Application fledbctober 26, 1925. Serial 1T9. 84,798.

I This invention relates to woodworking machines and more particularly to work carriers for supporting the work in position i to be acted upon by a cutter.

Wood working machines have been employed heretofore having a rotating carrier for supportin the work and feeding it relatively to t e cutter, but in operating these machines as constructed heretofore, it

has been necessary to move the work carrier away from the cutting position in order to 1 remove a finished piece of work and substitute a new iece to be operated on by the cutter. This as necessitated a suspension of the cutting operation, each time a piece of work is changed u n the work carrier, with the result that t e output of the machines has been considerably lower than it' would have been if the machines had been constructed to be operated continuously.

The present invention is therefore directed to work supporting means which is so constructed that the work upon one portion of the rotating carrier may be changed while the cutter is operating upon a piece of work secured to a different portion of the carrier, and as a result the cutter may operate upon one piece of work after the other without a suspension in the operation while work is being changed. a

One important feature of the invention therefore resides in a work carrier having clamping means for securing several pieces of work to the carrier so that they will bev acted upon one after the other b the cutter,

and in the construction by whic a finished piece of work may be removed and another piece inserted inits place during the opera 1 tion of the cutter upon work secured to a different portion of the carrier.

Another feature of the invention resides in means operated by the rotation of the work carrier for automatically'moving the work holding clamps to the work engaging position as a piece of work approaches the cutter and for releasing the work after it has been acted upon by'the'cutter.

Still another feature of the invention r e-' sides in the construction by which similar pieces of work may be secured to the oppo-, site faces of the work support so that the same cutter may operate upon the two pieces simultaneously, and in the clamping means for holding the two pieces in place during combination of parts in addition to the above will be hereinafter described in con- .nection with the accompanying drawings which illustrate one good practical form of the invention. i In the drawings Fig. 1 is a perspective View of the upper portion of a wood shaping machine provided with a work carrier constructed in accordance with the present invention.

Fig. 2 is a top plan view of the work carrier of Fig. l. i

Fig. 3 is a vertical sectional view thru that portion of the machine which supports the carrier.

Fig. 4& is an enlarged sectional view taken on the line 44 of Fig. 2; and

Fig. 5 is a sectional view taken on the line 5-5 of Fig. 4.

The work carrier of the present invention may be employed upon various different types of machines for shaping wooden blanks in conformity with a predetermined form or pattern, and it may be used in connection with a cutter the rotating axis of which is held in a fixed position, or in connection with a cutter that is mounted for movement bodily towards and from the work carrior.'

In the construction disclosed in Fig. 1

two cutters are shown, one of which rotates about a fixed axis and the other of which is mounted for swinging movement toward and from the work.

The wood shaping machine maybe provided with a supporting frame'of any suitable construction and is shown in Fig. 3 as the cutting blades of which may have any desired configuration, depending upon the shape tobe given to the work upon which it operates. The cutter shaft 13 may be driven by a belt, or by an electric motor, and

Inn

is shown as having the electric motor 16, and

since it may be desirable to raise and lower construction shown the work carryin 'This vertical adjustment may be eifected by the adjusting screw 17, the threaded portion of which engages a, lug 18 secured to the motor casing, and the screw 17 is rotat ably supported by the machine frame and may be rotated by a, hand wheel 19 which .is operetively connected to the screw by bevel gears 2 Since more or less difficulty is experiencedv in operating a cutter against the grain of the wood, in the construction shown in Fig.

1, two cutters are provided, one of which rotates in a. right hand direction, and the other in a left hand direction so that one cutter may operate upon the grain of the wood that extends in one direction, and'the other. cutter will operate upon the grain of the'wood that extends in the opposite direc tion. The means shown in Fig. lfor supporting the second cutter consists of a stand ard 2l'which may he adjustziblv secured to the upper face of the table 12 by the bolts 22. A head 23 slidably secured to the stand ard 21 serves to support the swinging cutter ,24 and this cutter may be raised and lowered upon rotating the hand wheel25, The cut: ter 241i is shown as supported by arms; 26

for swinging movement toward and from the work and it is driven by an electric motor within the casing 27. A chain 28 having a weight 29 secured to its lower end is provided to exert a continuous force upon the supporting means for the cutter 24 and tends to move the cutter towards the work. The construction and operation of the cut ters just described form no essential part of,

the present invention and amore detailed description of their constructlon and open 'ation is therefore deemed unnecessary.

The work carrier is supported in the construction shown for movement towards end from the fixed cutter 15, and to this end the work carrier to be described is mounted upon the slide 28 which is mounted within a slot formed in the table 155 and is movable towards and from the cutt The slide 28 is provided with it fixed she t 29 about which the work supporting cerrier'rotutes and this carrier has a carrier base 30 which is secured o a' spider frame 31 having a hub-that is journaled upon the fixed sheft 29. In the base is secured to the spider frame 31 and y the arms 32 secured to the base by bolts 33 and.

the arms 32 are adjustebly secured to arms of the spider trams by bolts 34.- The spider frame 3L is provided with a bearing sleeve 35 which is'journaled upon the shaft 29, end

the lower end of this sleeve rests upon an unti-frictiou hearing 36-, the arrangement being such that the. sleeve may be adjusted vertically relutivelyto the spider iraiheby adjusting the screws 3'5,

As stated, one feature of the invention rerigidly secured to the fixed shaft 29 so that the cairn 38 is prevented from rotating with the work carrier.

As above indicated another fea'ture of the invention resides in the construction by which the work blanksmaybe secur'ed'to the upper and lower faces of. a; work support,

and to this end, in the construction shown,"

the worksiipporti), which may have somewhat the form of a hollow ring or hollow square, aswill be apparent from Figs. land 2, is supported in spaced relation to the work carrier base 30 by the corner posts 41.

In. order that the work W may be properly positioned upon'the'work'support 40 the 7 work support may be provided with the his 42 which form enebutment for one en of i each of the work blanks, and movement of the work inwardly towards the axis of the rotating 'carriermay be limited by the ad-,

justoblescrews 43 that maybe-mounted in the corner posts il The mea-usshown for simultaneously clamping one piece of work W to the upper face of the so port 40, and a secondpieee to the lower, ace of this support, consists v of. the clamping carriers 4.4 and 45, which are mounted one above, the other,'and are pivotz lly connected bythe pivot pin 46, as best shown in Fig.- i. As previously pointed out, the work carrier is constructed so that different pieces oi. 'worli may be secured to the carrier in different positions about its periphery and the carrier is therefore provided with a number of clamping means forsecuring the work to the upper v and lower feces of tlieworlr support, eight clamping carriers being shown in the present cese, four being employed to secure the work to the upper face of the work sup' porno-lid the other four for securing the y work to the lower face. v p

Each of the upper clamp carriers 44 is provided with an inwardly extending arm 17 which is preferably adjustably secured to an inwardly extending portion i8 of the clamp carrier 44, the adjustment being obs toined by meensot the bolt 49.

Each lower clamp carrier 45 is likewise provided with on inwardly extendingarm 50 adjustebly secured to a portion'of tl1e clamp carrier by the bolt 52. The arms 47 'and 50 are provided at their inner ends withthe rollers 51 adapted to engage the cuinoperatlngmeens 38..

, the upper end of the bolt.

- cam, an

The cam 38 has a wide portion 52 which extends thru a substantial are and a narrow portion 53 that forms the remaining portion of the circular cam. The arrangement is such that as the work carrier rotates some of the rollers 51 will engage the narrow portion 53 of the cam to permit the clamping means controlled by theserollers to release the work, whileother rollers 51 will be forced a art by the wide portion 52 of-the this will rock the clamp carriers about the pivot pin 46 and will move the clamps to the work holding ,position. The fixed cam 38 is secured to the shaft 29 so that the reduced portion of the cam 53 lies away from the cutters, and as a result each pair of pivoted clamping means will be moved into work holding position as they move under the rotation of the carrier towards the cutters and will be released as they move away from the cutters. b

Each upper clamp carrier 44 is shown as rovided with a pair of outwardly extend lug arms 54 and each of these arms is provided with clamping means 55 adjustably secured to its outer end by the threaded bolt 56. In order that work difl'erin, in size and shape may be supported upon the work carrier, it is desirable that the arms 51 be adjustably-secured to the clamping-carriers 44, and the clamping carriers are therefore provided with slots extending longitudinally of and adapted to receive the head of the bolts 57 which bolts extend thru slots extending longitudinally of the arms 5-t. As a result of this construction the arms 54 may be readily secured to the clamping carriers in various positions of adjustment.

As abovestated the fixed cam 38 serves to force the clamping means into engagement with the work andto hold tlie work in place until a cutter has completed its operation upon the work. and then serves to release'the work. It is desirable to provide mechanism for moving the clamping means away from the work when the latter is to be released,vand to this end .in the construction shown each pair of clamping carriers 44 and 45 is provided with the bolts 58'the lower ends of which are secured to the clamping carrier 45; and the upperportion of each bolt. extends thru a lug 59 upon the upper clamping'carrier and a spring 60 is confined between the lug 59 and a not at This construction serves to exert a yielding pressure upon the rocking levers that tends to more the clamps out of the work holding position. In the particular construction shown. each of the lower clamping carriers 45 is provided with a sleeve 61, which is mounted upon an upstanding pin 62 supported bv the spider frame 31. and as a result of this construction the pivoted clamp carriers are pulleys and has held in place by the pins 62 for floating movement relative. to the carrier irame. Each lower clamping carrier 45 is provided with a pairot' outwardly extending arms (33 which are adjustably secured to their carriers by bolts (54 in the manner just described in connection with the upper clamp carriers, and the rocking movement of the arm 63 in a downward direction under the" vided, the lower ends of which are secured to the spider frame .31, and the upper ends of which may be connected by the bridge bar 66. The posts 65 serve also to prevent a the pivoted clamp carriers from rocking about thepositioning pins 62. v

Var'ous means might be provided for 1mpart in a rotative movement to the work carrier to cause tl'iersame to feed the work relative to the cutter or cutters, and in the construction shown the work carrier base 30 is provided with a rack 67 in the form of a perforatedstrip of metalvthat extends entirely around the base 30 and this .rack is adapted to engage and be driven by a gear 68 which rotate-i about the axis of the fixed cutter 13 and. s driven at the desired speed by a series of gears 69. shown in Fig. 3. In the construction shown, means is provided for urging the work towards the fixed cutter, and to this end the slide 28 which rotatably supports the work carrier is provided with a cable TOwhi'ch iss'cculed to the slide at 71 and this cable passes around several gu de lower end.

Should it be desired to move the work cart 'iie'r away from the cutter this may be done by pressing upon the foot treadle 7 3 pivotallvf'secured to thelowe'r portion of the rock- 1 'ing lever 74,'the upper end of which is Socured by the pivotpin 7 5 to a bracket 76 extending downwardlv. from the supporting talhlc; lVIovcuicnt of the foot operating lever 74 s imparted by the link 77 to the rocking lever 78 pivotallv supported at 79, and the upper end of this lever is provided with a (10;: 80 adapted to engrave the toothed rack 81 scoured to the under face of the slide 28.

A dog 82 pivotallv moun-tc l upon the lever 78 and the rocking movement of which is controllml bvthc foot treadle 73 thru the a weight 72 secured to its chain 82 serves to secure the rocking lever 78 in the carrierwithdrawingposition.

. Various means might be provided for controlling the engagement of the cutters with the work presented to the cutters by the work carrier, and in the construction shown the work carrier is provided with a lower pattern or profile guide 83 adapted to engage a roller 84 mounted upon the cutter shaft 13, and which rotates with the driving gear 68. The engagement of the swinging cutter 24 with the work is controlled by a second pattern or profile guide 85 against which a or tion 86 of the lower swinging arm 26 0 the movable cutter rests, The profile guides 83 and 85 are preferably so constructed that the fixed cutter 15 will operate upon the work W where the grain extends in one direction, and as this cutter approaches the portion of the work in which the grain extends in the opposite direction the profile guide 83 .will serve to force the work'out of engagement with this cutter while a depressed portion of the upper profile guide .85 will permit the movable cutter 24 that rotates in the opposite direction to perform the cutting operation upon the remaining portion of the work. The particular means however 'for controlling the engagement of the work with the cutter forms no part .of the present invention. I

' From the foregoing description and drawings it will be clear that the rotative movement of the work carrier relative to the fixed cam 38' serves to automatically move the work holding clamps to and from the operating position, the arrangement being such that as apair o1 clamps are rotated towards the cutting position they will be forced into work support 40 andafter these two pieces of work have been fed ast the cutters-they will then be automatica ly released and the clamps will be moved to their inoperative position so that a workman may easily remove the finished pieces of work and substitute new blanks to be operated upon by the cutters. As a result of this constructionthe machine may operate continuously, as it is unnecessary to suspend its cutting operation in order tochange the work.

-\Vl1at is claimed is 1. In a wood working machine, the combination of a rotating cutter, a work carrier supported for rotative movement relative to the cutter, a work support secured to, the carrier in spaced relation thereto to provide a work, receiving space between the carrier and work support, work securing clamps for securing the work to the opposite faces of the work support so that the cutter may operate simultaneously upon both pieces of work, and means operated by the movement .bination of a rotating cutter, a work carrier supported for rotative'moveinent relative to the cutter, a work support upon the carrier, work securing clamps for securing the work to the opposite faces of the work support so that the cutter may operate simultaneously upon both pieces of work, a cam supported against rotation. with the can. rier, and means actuated by the rotation of the carrier relative to the. cam for moving theclamps to the work holding position.

a. In a wood working machine, the com- 7 bin-ation of a rotating cutter, a work carrier supported to rotate in a horizontal planeto advance the work against the cutter, a work support upon the carrier and adapted to have pieces of work secured to its upper and lower faces, clamps for securing the work to both faces jot the work support, and means operated by the rotation of the work carrier tor moving the clamps to this work holding position and for releasing the work 5. In a wood working machine, the combination of a rotating cutter, a work carrier supported to rotate relatively to the cutter about a central axis, a work support upon firm holding engagement with the work dis-- posed at the upper and lower side of the the carrier and adapted to have work secured. to its opposite faces, clamps for securing the work to both faces of the work support, a double faced cam supported concentric with said axis and held against rotar' tion with the carrier, and means engagingthe opposite faces of the dam and operable by the rotative mov'ementot the carrier to move the clamp to the work engaging position.

6. In a wood working machine, the combination of a rotating cutter, a work carrier supported to rotate relativelyto :the'cutter, a work support upon the carrier and adapted to have work secured to its opposite faces, clamps for securing the work to both faces of the work support, a pair of pivoted levers supported by the carrier and provided with the clamps, and means operated by the rotative inovementof the carrier for rocking the levers to move the clamps into osition to secure the work to the opposite aces of the work support.

7. In a wood working machine, the crimbination of a rotating cutter, a work carrier: supportedto rotate relatively to the cutter,

a work support upon the carrier ended pteol the carrier and provided with work engaging clamps that are adjustable relative to the arm, and means operated by the power im-- parted to the machine for actuating the arms to clamp the work to the opposite faces of the work support.

8. In a wood working machine, the combination of arotating cutter, a work carrier supported to rotate relatively to the cutter, a work support upon the carrier adapted tohave work secured to its opposite faces, clamps for securing several pieces of Work to each face of the work support, and means actuated by the rotation of the carrier to clamp the work to each face of the work support as the work approaches the cutter and operable to release the work after it has been moved by the carrier past the cutter.

9. In a wood working machine, the combination of a rotating cutter, a work carrier supported to rotate relatively to the cutter,

clamping means for securing the work to the carrier, comprising a clamp carrier pivotally supported for rocking movement toward and from the work receiving face of the carrier and a pair of arms secured to the clamp car rier for adjustment longitudinally and transversely thereof to bring their outer ends into clamping relation with the different size work and adapted to be rigidly secured to the clamp carrier in their adjusted position, and means for rocking the clamping means to the work holding position.

10. In a wood shaping machine, the com,-

'bination of a rotating cutter supported to act upon the work, a. slide movable toward and from the cutter, a work carrier rotatabl mounted upon the slide, means for contro ling the engagement of the work with the cutter, and means operable by the rotative movement of the carrier for automatically clamping the work to the carrier, including a clamping arm, and a cam rigidly secured to the slide to operate said arm.

11. In a wood working machine, the combinationof a rotating cutter supported to act upon the work, a work carrier mounted for rotative movement past the cutter and for movement bodily toward and from the work, a pattern upon the carrier for controlling the engagement of the work with the cutter, and means operable by the rotative movement of the carrier for auto-' bination ofa rotating cutter, a work carrier supported for rotative maven-rent relative to the cutter and for movement bodily toward and from the cutter, a pattern for controlling the engagement oi. the cutter with the work, a central shaft about which the carrier rotates, a cain supported by said shaft and held thereb from rotating with the carrier, aclamp or securin the work to the carrier, and means actuate by the rotation of the carrier relative to said cam to move the clamp to the Work holding position and for releasing the work. j

13. In a wood working machine, the combination of a rotating cutter, a work carrier supported for rotative movement relative to the cutter and for movement bodily toward and from the cutter, means for controlling the engagement of the cutter with the work, a cam supported for movement bodily with the carrier but held from rotating therewith, a clamp for securingthe work to the car- Her, and means actuated by the rotation of the carrier relative to said cam to move the clamp to the work holding position and for releasing the Work..

14. In a wood working machine the combmation of a rotating cutter, a work carrier supported for rotative movement relative to the cutter and for movement bodily toward and from the cutter, clamps positioned about the axis of the carrier and [operable independently to secure work to controlling the engagement of the cutter with the work, a cam supported for movement bodily with the carrier but held from rotating therewith, andmeans actuated by the rotation of the carrier relative to said cam for successfully moving the clamp to the work holding position.

. 15. A wood working machine, comprising in combination, a rotating cutter, a Work carrier movable relative to the cutter, a work support upon the carrier, menus for securing the Work to the opposite faces of the work support comprising a pair of clamp carriers pivotally connected and mounted upon the carrier for floating movement, and means actuated by the movement of the carrier for automatically moving the clamping means to the Work holding position.

16. A wood working machine, comprisin in combination, a rotating cutter, a"wor carrier movable relatively to the cutter, a work "support upon the carrier constructed to have ,work secured to its opposite faces, means for simultaneously securing work to both faces of said support con1prisi1ig;a?pair of clamp carrierspivotally connected and supported by the carrier for floating movement, and means actuated by the power im-. parted to the machine for rocking the clamp carriers about their gri the work. 7 1 In a wood working machine, the combination of a. power driven cutter, a Work carrier supported for rotative movement relative to the cutter, a work support faspivotal connection to tened to the carrier in spacedrelation there-' to to provide a work receiving space be tween the carrier and work support, work securing clamps disposed at the vopposite sides of the work support and adapted to secure the work to the opposite faces of the work support and power actuated means for forcing the chimp to the work holding' position. v

18. In a wood worklng machine, the comblnetlon of a, power driven cutter, a work carrier supported for rotative movement relative to the cutter, a work support fee tened to the carrier, work securing clamps disposed at'the opposite sides of the work support and adapted to secure the work to the opposite faces of the work support, a, fixed cam supported at theaxis of the carrierso that it will not-rotate with the carrier, arms projecting from the clamps into clamps for holding work against theopposite feces of the work support, 'gopemtmg arms for the clamps, and e cam upporte between'seid arms and operable to wedge them apart es the carrier rotates to thereby force the dumps against the work.

In testimony whereof, I hev signed my name to this specification.

wrLLmrr/M, WHITNEY. 

